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226 lines
4.7 KiB
PHP
226 lines
4.7 KiB
PHP
--TEST--
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Testing substr() function
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--FILE--
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<?php
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/* Prototype: string substr( string str, int start[, int length] )
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* Description: Returns the portion of string specified by the start and length parameters.
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*/
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$strings_array = array( NULL, "", 12345, "abcdef", "123abc", "_123abc");
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/* Testing for error conditions */
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echo "*** Testing for error conditions ***\n";
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/* Zero Argument */
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var_dump( substr() );
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/* NULL as Argument */
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var_dump( substr(NULL) );
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/* Single Argument */
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var_dump( substr("abcde") );
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/* Scalar Argument */
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var_dump( substr(12345) );
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/* more than valid number of arguments ( valid are 2 or 3 ) */
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var_dump( substr("abcde", 2, 3, 4) );
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$counter = 1;
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foreach ($strings_array as $str) {
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/* variations with two arguments */
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/* start values >, < and = 0 */
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echo ("\n--- Iteration ".$counter." ---\n");
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echo ("\n-- Variations for two arguments --\n");
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var_dump ( substr($str, 1) );
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var_dump ( substr($str, 0) );
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var_dump ( substr($str, -2) );
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/* variations with three arguments */
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/* start value variations with length values */
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echo ("\n-- Variations for three arguments --\n");
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var_dump ( substr($str, 1, 3) );
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var_dump ( substr($str, 1, 0) );
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var_dump ( substr($str, 1, -3) );
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var_dump ( substr($str, 0, 3) );
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var_dump ( substr($str, 0, 0) );
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var_dump ( substr($str, 0, -3) );
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var_dump ( substr($str, -2, 3) );
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var_dump ( substr($str, -2, 0 ) );
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var_dump ( substr($str, -2, -3) );
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$counter++;
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}
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/* variation of start and length to point to same element */
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echo ("\n*** Testing for variations of start and length to point to same element ***\n");
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var_dump (substr("abcde" , 2, -2) );
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var_dump (substr("abcde" , -3, -2) );
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/* Testing to return empty string when start denotes the position beyond the truncation (set by negative length) */
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echo ("\n*** Testing for start > truncation ***\n");
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var_dump (substr("abcdef" , 4, -4) );
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/* String with null character */
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echo ("\n*** Testing for string with null characters ***\n");
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var_dump (substr("abc\x0xy\x0z" ,2) );
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/* String with international characters */
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echo ("\n*** Testing for string with international characters ***\n");
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var_dump (substr('\xIñtërnâtiônàlizætiøn',3) );
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/* start <0 && -start > length */
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echo "\n*** Start before the first char ***\n";
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var_dump (substr("abcd" , -8) );
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echo"\nDone";
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?>
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--EXPECTF--
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*** Testing for error conditions ***
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Warning: substr() expects at least 2 parameters, 0 given in %s on line %d
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NULL
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Warning: substr() expects at least 2 parameters, 1 given in %s on line %d
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NULL
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Warning: substr() expects at least 2 parameters, 1 given in %s on line %d
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NULL
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Warning: substr() expects at least 2 parameters, 1 given in %s on line %d
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NULL
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Warning: substr() expects at most 3 parameters, 4 given in %s on line %d
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NULL
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--- Iteration 1 ---
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-- Variations for two arguments --
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bool(false)
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bool(false)
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bool(false)
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-- Variations for three arguments --
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bool(false)
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bool(false)
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bool(false)
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bool(false)
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bool(false)
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bool(false)
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bool(false)
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bool(false)
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bool(false)
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--- Iteration 2 ---
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-- Variations for two arguments --
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bool(false)
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bool(false)
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bool(false)
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-- Variations for three arguments --
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bool(false)
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bool(false)
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bool(false)
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bool(false)
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bool(false)
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bool(false)
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bool(false)
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bool(false)
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bool(false)
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--- Iteration 3 ---
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-- Variations for two arguments --
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string(4) "2345"
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string(5) "12345"
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string(2) "45"
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-- Variations for three arguments --
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string(3) "234"
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string(0) ""
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string(1) "2"
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string(3) "123"
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string(0) ""
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string(2) "12"
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string(2) "45"
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string(0) ""
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string(0) ""
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--- Iteration 4 ---
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-- Variations for two arguments --
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string(5) "bcdef"
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string(6) "abcdef"
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string(2) "ef"
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-- Variations for three arguments --
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string(3) "bcd"
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string(0) ""
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string(2) "bc"
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string(3) "abc"
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string(0) ""
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string(3) "abc"
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string(2) "ef"
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string(0) ""
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string(0) ""
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--- Iteration 5 ---
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-- Variations for two arguments --
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string(5) "23abc"
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string(6) "123abc"
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string(2) "bc"
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-- Variations for three arguments --
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string(3) "23a"
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string(0) ""
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string(2) "23"
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string(3) "123"
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string(0) ""
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string(3) "123"
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string(2) "bc"
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string(0) ""
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string(0) ""
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--- Iteration 6 ---
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-- Variations for two arguments --
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string(6) "123abc"
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string(7) "_123abc"
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string(2) "bc"
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-- Variations for three arguments --
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string(3) "123"
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string(0) ""
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string(3) "123"
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string(3) "_12"
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string(0) ""
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string(4) "_123"
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string(2) "bc"
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string(0) ""
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string(0) ""
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*** Testing for variations of start and length to point to same element ***
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string(1) "c"
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string(1) "c"
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*** Testing for start > truncation ***
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bool(false)
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*** Testing for string with null characters ***
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string(6) "c xy z"
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*** Testing for string with international characters ***
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string(26) "ñtërnâtiônàlizætiøn"
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*** Start before the first char ***
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string(4) "abcd"
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Done
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